I recently made a cut into a metal screw which damaged the blade severely. Afterwards it made a strange noise while cutting, a bit of a buzzing or growling sound. The bottom edges are really rough now, no clean cut at all.

Some of the teeth had small splinters on the outside. So I tried resharpening all the teeth and removing or filing the splinters with a diamond stone below the outer diameter of the teeth, Since this did not help much, I put a grinding stone to all 3 outer blade sides while rotating the blade backwards with my hand.

I can not feel any rough or protruding parts on any of the teeth but there is still this growling sound and the edges are still rough.

Any ideas how to get the blade back into good shape?

11 replies so far

Send it to a professional resharpening service. They’ll inspect it and tell you if the teeth need replacing or resharpening or if the whole thing is damaged beyond repair. If the blade is an inexpensive hardware store purchase then get a new one as the saw company will likely charge at least $25 to do anything plus the cost of shipping.

Definitely send it out, someone who sharpens and repairs blades can determine if the blade can be salvaged (& whether or not it would be worth it to). Using a blade that’s been damaged could be very dangerous if the brazing holding one or more of the teeth onto the plate has been compromised. The teeth on most table saws are going right around 120mph, and while they’re not very big, they are very dense and could case severe damage and injury if they came off at the right time.

Is that a High Speed Steel blade, or carbide tipped blade?Even if you succeeded in removing the chipped places on the blade with your method, you will not have the correct clearance angles after that procedure.

Again, replace or professional resharpening. Resharp costs around here are typically between $.35-.45 per tooth. If it’s a cheap blade with large number of teeth it’s definitely better to replace it.

I have been thinking myself about the possibility of teeth partially coming loose. I just had some slight hope for some trick to find the maybe one offending tooth on a rather new (but not too expensive) blade.

I will go the safe route and already have ordered a new one as I don’t think professional repair will safe me a lot.